Weaknesses of a dynamic identity based authentication protocol for multi-server architecture

Details Weaknesses of a dynamic identity based authentication protocol for multi-server architecture Weaknesses of a dynamic identity based authentication protocol for multi-server architecture

2012-01-04

arxiv.org/abs/1201.0883v1

Computer Science

Cryptography and Security

Scientific paper

Recently, Li et al. proposed a dynamic identity based authentication protocol for multi-server architecture. They claimed their protocol is secure and can withstand various attacks. But we found some security loopholes in the protocol. Accordingly, the current paper demonstrates that Li et al.'s protocol is vulnerable to the replay attack, the password guessing attack and the masquerade attack.

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